Heat Transfer For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where, NPr = Prandtl number) NPr-1 NPr-1/3 NPr1/3 NPr NPr-1 NPr-1/3 NPr1/3 NPr ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The steam ejector is used to Remove condensate from the steam pipelines Create vacuum None of these Superheat the steam Remove condensate from the steam pipelines Create vacuum None of these Superheat the steam ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer (NRe.NPr)(D/L) is called the __________ number Stanton Peclet None of these Graetz Stanton Peclet None of these Graetz ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the absorptivity of a black body? 0.95 0.78 1 0.95 0.78 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which one gives the monochromatic emissive power for black body radiation ? Wien's law Stefan-Boltzman law Kirchhoffs law Planck's law Wien's law Stefan-Boltzman law Kirchhoffs law Planck's law ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will Decrease Remain unchanged Increase Either increase or decrease; depends on the coolant flow rate Decrease Remain unchanged Increase Either increase or decrease; depends on the coolant flow rate ANSWER DOWNLOAD EXAMIANS APP
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